body {
    margin: 0;
    padding: 0;
}
.header1 {  
    display: flex;
    height: 60px;
    width: 100%;
    background-color: rgb(51,51,51);
    color: white;
    justify-content: space-between;   
    position: fixed;
    top: 0;
    padding: 0;
    margin: 0;
}
.ul1 {
    width:210px;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: space-around;
}
.ul2 {
    width: 50px;
    padding: 0;
    margin: 0;
    display:flex;
    justify-content: center;
}
li {
    list-style-type: none;
}
a {
    color: white;
    display: block;
    width: 70px;
    height: 60px;
    line-height: 60px;
    text-align: center;
    text-decoration: none;   
}
a:hover {
    background-color: rgb(76,175,80);
}
.main {
    margin-top: 60px;
    width: 100%;
    padding-left: 10px;
    padding-right: 0;
    display: flex;
    justify-content: space-around;
    overflow-y: scroll;
}
.left, .right {
    width: 48%;
    height: 100%;    
}
p {
    text-indent: 2em;
}
